Yeah, I've mostly heard complaints about 6 and 7 (but then, that's probably because the areas of Buffy fandom I hung out in were firmly B/S, and you can see why they'd be *highly* hacked off with S6.) I thought 5 was one of the finest seasons, myself; it would have been a good high point to go out on. Pity it didn't, in a lot of ways.